TODAY MAR28
TEMPERATURE52
HUMIDITY86
PRESSURE101930
WIND COND.290 11.2
  • 5748Fri80%90%
  • 6146Sat70%20%
  • 6348Sun
  • 6950Mon
  • 7252Tue
daynightWeather update from Oakland, Metro Oakland International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Castlemont for September is 63.6 degrees
  • The lowest monthly average temperature in Castlemont for January is 49.6 degrees
  • The most monthly precipitation in Castlemont occurs in December with 4.1 inches
  • The air quality index in Castlemont is 5% better than the national average
  • The pollution index in Castlemont is 604% worse than the national average

Compare Oakland, CA Weather

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      Castlemont Average Temperature

      In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
      MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
      January41°F59°F50°F2.8"
      February45°F62°F53°F3.1"
      March47°F65°F55°F2.9"
      April49°F67°F57°F1.8"
      May52°F69°F59°F0.4"
      June54°F72°F62°F0.3"
      July56°F73°F63°F0.0"
      August57°F73°F63°F0.0"
      September55°F76°F64°F0.1"
      October52°F73°F61°F1.0"
      November47°F65°F56°F1.9"
      December42°F59°F50°F4.1"

      Castlemont air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexCastlemontOaklandCalifornia
      Air quality index404055
      Pollution index19,202,40019,202,40010,473,190

      Castlemont air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality290
      Days with moderate air quality74
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Castlemont air quality information

      PollutantTotal
      Arsenic0.180%
      Benzene0.140%
      Carbon Tetrachloride0.010%
      Lead0.280%
      Mercury0.060%

      Average monthly Castlemont temperature with heat index

      Castlemont monthly precipitation with daily maximum

      Castlemont monthly snow depth with daily maximum

      Castlemont monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Alhambra Valley, CA1,0514020.0%
      Lafayette, CA25,9494020.0%
      Reliez Valley, CA3,3214020.0%
      Shell Ridge, CA1,0814020.0%
      Castro Valley, CA64,3924020.0%
      Oakland, CA422,5754020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      London, ON421,456n/a 
      Minneapolis, MN424,536468.0%
      Tulsa, OK402,4414510.0%
      Laval, QC445,050n/a 
      Arlington, TX397,269512.0%
      Oakland, CA422,5754020.0%
      Source: The Castlemont, Oakland, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.